Starting mechanism for lapping machines



April 1 1941- c. A. HUTTO STARTING MECHANISM FOR LAPPING MACHINES FiledJune 3, 1940 3 Sheets-Sheet 1- lnve nior Aiior ney April 15, 1941. c A,Hu'r'ro 2,238,525

smwme MECHANISM FOR LAPPING'MACHINES Filed June s, 1940 s Sheets-Sheet 2(zavsfzan J4 $5171 0 I Inventor By M A itorney April 15, 1941. c, A.HUTTO STARTING MECHANISM FOR LAPPING mcmuas Filed June 5. 194o 3Sheets-Shegt s' In ventor By 2mm.

A iiorney Patented Apr. 15, 1941 orrrcs STARTING BIECHANIS M FOR,LAPPING MACHINES Christian A. Hutto, West Columbia, so. Application June3, 1940, Serial No.'338,592

4 Claims. (Cl. 19-4-62) My invention relates toimprovements in startingmechanism for picker lapping machines and the principal object in viewis to provide simply constructed means for automatically starting suchmachines, and which maybe applied to lapping machines of commercewithout necessitating material'change in the "basic construction thereofand which is quick acting and, durable and inexpensive to manufactureand install.

To-the accomplishment of the above, and subordinate objects presentlyappearing, a preferred embodiment of my invention has been illustratedin the accompanying drawings, 'set forth in detail in the succeedingdescription, and defined in the claims appended hereto;

In said drawings:

Figure 1 is'a fragmentary view in side elevation of the preferredembodiment of my invention,

Figure 2 is a fragmentary "view in front elevation illustrating the triplever in tripped position, 1

Figure 3 is a similar view illustrating thetrip lever in effectiveposition,

-'Figure 4 is a View in'perspective of the starting I mechanismdetached,

Figure 5 is a view in perspective of the stud bolt, and I I Figure 6 isa view in perspective of the block.

Referring to the drawings by numerals, the

the drawings, I designating one of the side frames, '2 a-lapguard and 3one of the usual lap pins which when empty is supported at opposite endsby concave seats, as at 4, forming forward elevated extensions of saidguards. These machines are provided with a starting lever 5 extendinghorizontally, forwardly alongside the side frame I and pivotally mountedat the rear end thereof, as at 6, for rocking movementupWardly anddownwardly to mesh and disengage, respectively, a suitably driven gear Ithereon with a gear 8 operating mechanism for running stock to arotating calender roll 9. Adjacent to the front end of the machine is anupstanding manually operative trip lever I pivoted at its lower end, asat H, to a vertically slotted guide bracket I I fixed to said frame Ifor the extension of the front end of said lever therethrough, the triplever being swingable laterally of said frame I in opposite directionsinto and from tripping position, respectively, relative to startinglever 5.

In the tripping position of said lever I0, the

starting lever 5 is free to drop, under the influence ofgravity, anddisengage gears 1 and 8 and thereby stop said operating mechanism, notshown. {Movement of said trip lever II] from 'tripping'positioninterposes a shoulder I2 there- 'on beneath-the starting lever 5 to holdthe latter in upswung position, the gears I and 8 meshed,

andsaid operating mechanism running. The trip lever I0 iscounterweighted at its lower end, as at 3, to swing'from trippingposition. The parts I4 and I5 are elements of the said operatingmechanism which need merely be identified in passing.

' According to my invention, the following mechanism is provided forelevating the starting lever 5.

, Mounted in bracket bearings IE on the front endso'f theside 'frame barI, for vertical endwise movement is aslide'bar I1 having a yoke I8 atits upper end similar to seat 4 and adapted to 'seat one end of the lappins 3 when deposited in said seat l. The bar I! has a right angled,outturn'ed extension I9*at its lower end overlying a laterally extendingarm '25 of a bell crank lever "2| pivoted for vertical rocking movementon a stud bolt'22 extending from said side frame I above the forward endof the starting lever 5, said bolt having a cotter pin 23 therein forretaining said bell crank thereon. The other and upstanding arm 24 ofthe bell crank 2| has pivoted thereto,as a't25, one end of a link 26extending rearwar'dly therefrom, the other end 01' said link-beingpivoted, as at 21, to the upper portion-of an upstanding lifter lever 28arising from the starting lever 5 and having its lower end pivotedthereto, as at28', so that said lever 28 is swingable on the lever 5.The upperend of lifter lever 28 has the form of a hook 29 designedunder. swinging of said lever 28 in opposite directions'to' be movedinto and from overlying relation .to a substantially rectangular block30, suitably secured, as'b-y bolts 31, to the journal 32 of the calenderroll 9. As best shown in Figure l, the block 30 is secured to saidjournal 32 concentrically'thereof so that when the hook 29 is moved.overxthe .same either end of said block will pickup the hook andthereby elevate said lifter I lever 28 and consequently the startinglever 5.

A coil spring 32 having its ends suitably connected to the lifter lever28 and the starting lever 5, as at 33, 34, acts normally to swing saidlever 28 in a direction to move said hook 29 from over the block 30 andhold said lever in a normal ineffective position. In this position oflifter lever 28, the bell crank 2| is positioned through the medium oflink 26 so that arm 20 thereof holds the bar I! in an elevated positionand the yoke l8 slightly above the seat 4. The numeral 36 designates acountersink in the lifter lever for accommodating a bar 35 which is apart of a knock-off mechanism of the machine and which forms no part ofthe invention. A plurality of apertures 37 in the link 26 provides forchanging the pivotal connection thereof to arm 24 of bell crank 2| asoccasion may require, for instance, to take up wear on the parts.

Referring now to the operation of the invention, when the lap pin, orrod 3 is empty, or in other words, when the finished lap is removedtherefrom, the pin is placed over the seats 4 with one end resting inyoke l8. The weight of the pin in yoke l8 lowers rod H in guides 16.Such lowering of rod I6 rocks the bell crank 2| in the proper direction,counterclockwise as viewed in Figure 1, to move the link 26 so that thelatter swings the lifter lever 28 in a direction to move the hook 29over the block 30. As will be obvious, if the starting lever is down, ingear disengaging position, said hook I8 is thereby positioned down overthe block 30 for operation by the latter so that rotation of thecalender roll 9 and block 30 elevates the lifter lever 28, and hence thestarting lever 5, to throw the machine in gear and set in motion saidoperating mechanism. As has already been set forth, the trip lever 10holds the starting lever 5 elevated until operated manually to trippingposition to stop the drive. As will also be obvious, when the lap pin 3is removed from the yoke l8, bar ll, bell crank 2|, line 26 and lifterlever 28 will be returned to normal position, shown in Figure 1, by thespring 32, and as soon as the starting lever 3 has been loweredfollowing upon operation of the trip lever H] from tripping position.

By starting the machine in this manner, the

operator is enabled to remove and weigh the finished lap while theproper amount of stock is run through the machine to start a new lap.Obviously, in thus starting the machine without stopping running of thestock through, while removing and weighing the finished lap, much timeis saved and production speeded up.

The foregoing will, it is believed, suifice to impart a clearunderstanding of my invention without further explanation.

Manifestly the invention, as described, is sus ceptible of modificationwithout departing from the inventive concept, and right is hereinreserved to such modifications as fall within the scope of the subjoinedclaims.

Having described the invention, what I claim as new is:

1. In a picker lapping machine, the combination with a verticallyswingable starting lever for operating mechanism, a constantly rotatingcalender roll, and a lap pin, of means to lift said starting levercomprising a lifting lever pivoted to said starting lever for setting inopposite directions into and from effective positions, respectively, andendwise movable in the effective position thereof to lift said startinglever, means operative by the weight of the lap pin thereon to set saidlifting lever in effective position, and means on said calender rolloperative under rotation of the latter to move said lifting lever in theeffective position of said lever.

2. In a picker lapping machine, the combination with a verticallyswingable starting lever for operating mechanism, a constantly rotatingcalender roll, and a lap pin, of means to lift said starting levercomprising a lifting lever pivoted to said starting lever for settingin' opposite directions into and from effective positions, respectively,and endwise movable in the effective position thereof to lift saidstarting lever, means operative by the weight of the lap pin thereon toset said lifting lever in effective position, and means on said calenderroll operative under rotation of the latter to move said lifting leverin the effective position of said lever, said last means comprising arotary block on said calender roll, the lifting lever having a hookthereon for engagement by said block. 7

3. In.a picker lapping machine, the combination with a verticallyswingable starting lever for operating mechanism, a constantly rotatingcalender roll, and a lap pin, of means to lift said starting levercomprising a lifting lever pivoted to said starting lever for setting inopposite directions into and from effective positions, respectively, andendwise movable in the effective position thereof to lift said startinglever, means operative by the weight of the lap pin thereon to set saidlifting lever in effective position, and means on said calender rolloperative under rotation of the latter to move said lifting lever in theeffective position of said lever, the second mentioned means comprisinga yoke forming a seat for said pin and slidably mounted on a fixed partof the machine for downward movement under the weight of said pintherein, and operating connections between said yoke and lifting leverwhereby such downward movement of said yoke sets the lifting lever.

4. In a picker lapping machine, the combination with a verticallyswingable starting lever for operating mechanism, a constantly rotatingcalender roll, and a lap pin, of means to lift said starting levercomprising a lifting lever pivoted to said starting lever for setting inopposite directions into and from effective positions, respectively, andendwise movable in the effective position thereof to lift said startinglever, means operative by the Weight of the lap pin thereon to set saidlifting lever in effective position, and means on said calender rolloperative under rotation of the latter to move said lifting lever in theeffective position of said lever, the second mentioned means comprisinga yoke forming a seat for said pin and slidably mounted on a fixed partof the machine for downward'movement under the weight of said pintherein, and operating connec tions between said yoke and-lifting leverwhereby such downward movement of said yoke sets the lifting lever, saidoperating connections comprising a bell crank operative by the liftinglever, and a link connection between said bell crank and the liftinglever.

CHRISTIAN A. HUTTO.

